package com.sy.service;

import com.sy.handle.UserServiceHandler;
import com.sy.pojo.RpcRequest;
import com.sy.service.impl.JSONSerializer;
import com.sy.util.RpcDecoder;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.string.StringEncoder;
import org.springframework.stereotype.Service;

@Service("IUserService")
public class UserServiceImpl implements IUserService {

    // 客户端要远程调用的方法
    public String sayHello(String msg) {
        System.out.println("客户端发来的请求信息：" + msg);
        return "调用成功：{success}";
    }


    // 启动服务器
    public static void startServer(String ip, int port) throws InterruptedException {
        // 1.创建两个线程池对象
        NioEventLoopGroup bossGroup = new NioEventLoopGroup();
        NioEventLoopGroup workGroup = new NioEventLoopGroup();

        // 2.创建服务端的启动引导对象
        ServerBootstrap serverBootstrap = new ServerBootstrap();

        //3.配置启动引导对象
        serverBootstrap.group(bossGroup, workGroup)
                // 设置通道为 NIO
                .channel(NioServerSocketChannel.class)
                // 创建监听channel
                .childHandler(new ChannelInitializer<NioSocketChannel>() {
                    protected void initChannel(NioSocketChannel nioSocketChannel) throws Exception {
                        // 获取管道对象
                        ChannelPipeline pipeline = nioSocketChannel.pipeline();
                        // 给管道对象 pipeLine 设置编码
                        pipeline.addLast(new StringEncoder());
                        // 给管道对象 pipeLine 设置解码类
                        pipeline.addLast(new RpcDecoder(RpcRequest.class, new JSONSerializer()));
                        // 将自定义 ChannelHander 添加到管道中
                        pipeline.addLast(new UserServiceHandler());
                    }
                });

        //4.绑定端口
        serverBootstrap.bind(8999).sync();
    }
}
